Merge remote-tracking branch 'upstream/master' into sharelatex

* upstream/master: (121 commits)
  Fix fetcher tests (#3583)
  Convert entry preview panel to JavaFX (#3574)
  Remove dependency for JUnit4 (#3580)
  Update tracis cache config as recommned by the docs (#3575)
  fix typo
  Show development information
  Release v4.1
  Add new authors to mailMap (#3567)
  Fix build
  Really fix changelog
  Fix changelog
  Minor changes
  Disable the autocompletion as default (#3569)
  Add update exception for applicationinsights 2.0.0-BETA (#3571)
  Install4j jres 152 (#3570)
  Fix grammar mistake
  Downgrade applicationinsights. Fixes #3561
  Adapt scripts/prepare-install4j.sh to JRE1.8.0_152 (#3568)
  ExportFormats: Use FileExtension enum (#3565)
  Update guava from 23.5-jre -> 23.6-jre
  ...

# Conflicts:
#	build.gradle

.gitattributes

@@ -10,5 +10,3 @@ AUTHORS eol=lf
 
 # disable after a release
 # CHANGELOG.md merge=union
-
-src/main/resources/l10n/*.properties merge=union

.mailmap

@@ -131,4 +131,9 @@ Berk Gureken <berkgureken@gmail.com>
 Abhishek Rai <abhisheksavitarai@gmail.com>
 Abhishek Rai <betheunique@users.noreply.github.com>
 Stéphane Curet <stephane.curet@orange.fr>
-Erdem Derebasoglu <erdemderebasoglu@hotmail.com>
+Erdem Derebasoglu <erdemderebasoglu@hotmail.com>
+Domenico Cufalo <cufalo@gmail.com>
+Tobias Bouschen <tobias.bouschen@googlemail.com>
+József Pallagi <pallagijoe@gmail.com>
+Mattia Bunel <MBunel@users.noreply.github.com>
+Waida Fan <31742543+weidafan@users.noreply.github.com>

.travis.yml

@@ -6,6 +6,9 @@ language: java
 dist: trusty
 sudo: required
 
+git:
+  depth: 1
+
 services:
   - postgresql
   - mysql
@@ -20,12 +23,14 @@ env:
     - TEST_SUITE=guiTest
     - TEST_SUITE=checkstyle
     - TEST_SUITE=codecov
+    - DEPENDENCY_UPDATES=check
 
 matrix:
     fast_finish: true
     allow_failures:
       - env: TEST_SUITE=fetcherTest
       - env: TEST_SUITE=codecov
+      - env: DEPENDENCY_UPDATES=check
 
 # JavaFX localization tests need a running X environment
 before_install:
@@ -46,20 +51,22 @@ script:
   - if [ "$TEST_SUITE" == "checkstyle" ]; then ./gradlew checkstyleMain checkstyleTest checkstyleJmh; fi
   - if [ "$TEST_SUITE" == "guiTest" ]; then ./buildres/gui-tests.sh; fi
   - if [ "$TEST_SUITE" == "codecov" ]; then ./gradlew jacocoJunit5TestReport; bash <(curl -s https://codecov.io/bash); fi
+  - if [ "$DEPENDENCY_UPDATES" == "check" ]; then ./gradlew -q checkOutdatedDependencies; fi
 
 after_failure:
   # show test results if build fails
   - $TRAVIS_BUILD_DIR/scripts/after-failure.sh
 
 branches:
-  only: 
+  only:
     - master
 
 # cache gradle dependencies
 # https://docs.travis-ci.com/user/languages/java#Caching
 before_cache:
-  - rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
 cache:
   directories:
-  - $HOME/.gradle/caches/
-  - $HOME/.gradle/wrapper/
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/

AUTHORS

@@ -20,6 +20,7 @@ Anh Nghia Tran
 Anita Armbruster
 Antonio Ribeiro
 Arno Blouin
+Bartosz J. Kaczkowski
 Behrouz Javanmardi
 Benjamin Köhler
 Berk Gureken
@@ -44,15 +45,18 @@ Daniel Svärd
 David Gleich
 David Weitzman
 Dennis Tschechlov
+Domenico Cufalo
 Dominik Waßenhoven
 Douglas Nassif Roma Junior
 Eduard Braun
 Eduardo Greco
 Egon Willighagen
 Ellen Reitmayr
 Erdem Derebasoglu
+Erdem Derebaşoğlu
 Erik Putrycz
 Ervin Kolenovic
+Ethan Harris
 Fabian Bauer
 Fabian Bieker
 Fabrice Dessaint
@@ -90,6 +94,8 @@ Jonathan Powell
 Jong-Ho Shinn
 Jorge Tornero
 Joshua Ramon Enslin
+Julian Pfeifer
+József Pallagi
 Jörg Lenhard
 Jörg Wegner
 Jörg Zieren
@@ -117,12 +123,14 @@ Martin Kähmer
 Martin Stolle
 Mathias Walter
 Matthias Geiger
+Mattia Bunel
 Mattias Ulbrich
 mcmoody
 Meltem Demirköprü
 Michael
 Michael Beckmann
 Michael Falkenthal
+Michael Lass
 Michael Spiegel
 Michael Wrighton
 Michel Baylac
@@ -143,6 +151,7 @@ Oliver Beckmann
 Oliver Kopp
 Oscar Gustafsson
 Owen Huang
+Patrick Scheibe
 Paul Martin
 payload
 Peter Ansell
@@ -184,6 +193,7 @@ Thorsten Dahlheimer
 Tim van Rossum
 Tim Würtele
 Tobias Boceck
+Tobias Bouschen
 Tobias Denkinger
 Tobias Diez
 tokkot
@@ -194,6 +204,7 @@ Ulrich Stärk
 Ulrik Stervbo
 Uwe Kuehn
 Vincent W. Yang
+Waida Fan
 Waluyo Adi Siswanto
 Ward Poelmans
 Wenbo Yang
@@ -202,3 +213,4 @@ Yang Zongze
 Yara Grassi Gouffon
 Yifan Peng
 zacmks
+Zhang Liang

CONTRIBUTING.md

@@ -82,10 +82,9 @@ because <additional rationale>.
 
 ### When adding a new Localization.lang entry
 Add new `Localization.lang("KEY")` to Java file.
-Tests fail. In the test output a snippet is generated which must be added to the English translation file. There is also a snippet generated for the non-English files, but this is irrelevant.
-Add snippet to English translation file located at `src/main/resources/l10n/JabRef_en.properties`
-With `gradlew localizationUpdate` the "KEY" is added to the other translation files as well.
-Tests are green again.
+Tests fail. In the test output a snippet is generated which must be added to the English translation file.
+Add snippet to English translation file located at `src/main/resources/l10n/JabRef_en.properties`.
+[Crowdin](http://translate.jabref.org/) will automatically pick up the new string and add it to the other translations.
 
 You can also directly run the specific test in your IDE. The test "LocalizationConsistencyTest" is placed under `src/test/java/net.sf.jabref.logic.l10n/LocalizationConsistencyTest.java`
 Find more information in the [JabRef Wiki](https://github.com/JabRef/jabref/wiki/Code-Howtos#using-localization-correctly).